Selective stimulation systems and signal parameters for medical conditions
First Claim
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1. A system for stimulating a target dorsal root ganglion to perform a targeted treatment, the system comprising:
- a lead having at least one electrode, wherein the lead is configured to be positioned so that at least one of the at least one electrode is able to stimulate the target dorsal root ganglion; and
an implantable pulse generator connectable with the lead and configured to output a stimulation signal;
wherein a current amplitude of the stimulation signal output by the pulse generator is incrementally adjustable in response to user inputs accepted by an external programmer that wirelessly communicates with the implantable pulse generator;
wherein the system is configured such that when said current amplitude of the stimulation signal output by the pulse generator is at least a specified level said current amplitude is adjustable in first increments of 50 μ
A or less in response to user inputs accepted by the external programmer, and when said current amplitude is less than the specified level said current amplitude is adjustable in second increments of 25 μ
A or less in response to user inputs accepted by the external programmer;
wherein the specified level is a current amplitude level at which an increment resolution transitions from the first increments to the second increments, or vice versa;
wherein the second increments are less than the first increments; and
wherein the first and second increments enable adjustments to the current amplitude in small enough increments to identify a magnitude for the current amplitude that stimulates the target dorsal root ganglion, to achieve the targeted treatment, without stimulating a ventral root associated with the target dorsal root ganglion.
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Abstract
Devices, systems and methods are provided for targeted treatment of a variety of conditions, particularly conditions that are associated with or influenced by the nervous system, such as pain. Targeted treatment of such conditions is provided with minimal deleterious side effects, such as undesired motor responses or undesired stimulation of unaffected body regions. This is achieved by directly neuromodulating a target anatomy associated with the condition while minimizing or excluding undesired neuromodulation of other anatomies.
249 Citations
20 Claims
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1. A system for stimulating a target dorsal root ganglion to perform a targeted treatment, the system comprising:
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a lead having at least one electrode, wherein the lead is configured to be positioned so that at least one of the at least one electrode is able to stimulate the target dorsal root ganglion; and an implantable pulse generator connectable with the lead and configured to output a stimulation signal; wherein a current amplitude of the stimulation signal output by the pulse generator is incrementally adjustable in response to user inputs accepted by an external programmer that wirelessly communicates with the implantable pulse generator; wherein the system is configured such that when said current amplitude of the stimulation signal output by the pulse generator is at least a specified level said current amplitude is adjustable in first increments of 50 μ
A or less in response to user inputs accepted by the external programmer, and when said current amplitude is less than the specified level said current amplitude is adjustable in second increments of 25 μ
A or less in response to user inputs accepted by the external programmer;wherein the specified level is a current amplitude level at which an increment resolution transitions from the first increments to the second increments, or vice versa; wherein the second increments are less than the first increments; and wherein the first and second increments enable adjustments to the current amplitude in small enough increments to identify a magnitude for the current amplitude that stimulates the target dorsal root ganglion, to achieve the targeted treatment, without stimulating a ventral root associated with the target dorsal root ganglion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for identifying a magnitude for a current amplitude used to stimulate a target dorsal root ganglion, to achieve a targeted treatment, without stimulating a ventral root associated with the target dorsal root ganglion, the method comprising:
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implanting a lead having at least one electrode so that at least one of the at least one electrode is able to stimulate the target dorsal root ganglion; connecting the lead to an implantable pulse generator configured to output a stimulation signal; accepting user inputs via an external programmer that wirelessly communicates with the implantable pulse generator; incrementally adjusting a current amplitude of the stimulation signal output by the pulse generator in response to the user inputs accepted via the external programmer; wherein the incrementally adjusting includes adjusting the current amplitude in first increments of 50 μ
A or less in response to user inputs accepted via the external programmer when the current amplitude is at least a specified level, and adjusting the current amplitude in second increments of 25 μ
A or less in response to user inputs accepted via the external programmer when the current amplitude is less than the specified level;wherein the specified level is a current amplitude level at which an increment resolution transitions from the first increments to the second increments, or vice versa; wherein the second increments are less than the first increments; and wherein the first and second increments enable adjustments to the current amplitude in small enough increments to identify a magnitude for the current amplitude that stimulates the target dorsal root ganglion, to achieve the targeted treatment, without stimulating a ventral root associated with the target dorsal root ganglion. - View Dependent Claims (16, 17)
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18. A method for use with a system that includes a lead, a pulse generator, and an external programmer, wherein the lead has at least one electrode and is configured to be positioned so that at least one of the at least one electrode is able to stimulate the target dorsal root ganglion, wherein the pulse generator is connectable with the lead and is configured to output a stimulation signal, and wherein the external programmer is configured to accept user inputs and to wirelessly communicate with the pulse generator, the method comprising:
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incrementally adjusting a current amplitude of the stimulation signal output by the pulse generator is in response to the user inputs accepted via the external programmer; wherein the incrementally adjusting includes adjusting the current amplitude in first increments of 50 μ
A or less in response to user inputs accepted via the external programmer when the current amplitude is at least a specified level, and adjusting the current amplitude in second increments of 25 μ
A or less in response to user inputs accepted via the external programmer when the current amplitude is less than the specified level;wherein the specified level is a current amplitude level at which an increment resolution transitions from the first increments to the second increments, or vice versa; wherein the second increments are less than the first increments; and wherein the first and second increments enable adjustments to the current amplitude in small enough increments to identify a magnitude for the current amplitude that stimulates the target dorsal root ganglion, to achieve the targeted treatment, without stimulating a ventral root associated with the target dorsal root ganglion. - View Dependent Claims (19, 20)
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Specification